17399 has 4 divisors (see below), whose sum is σ = 17664. Its totient is φ = 17136.

The previous prime is 17393. The next prime is 17401. The reversal of 17399 is 99371.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 17399 - 2⁴ = 17383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 59 + ... + 195.

It is an arithmetic number, because the mean of its divisors is an integer number (4416).

2¹⁷³⁹⁹ is an apocalyptic number.

17399 is a deficient number, since it is larger than the sum of its proper divisors (265).

17399 is a wasteful number, since it uses less digits than its factorization.

17399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264.

The product of its digits is 1701, while the sum is 29.

The square root of 17399 is about 131.9052690380. The cubic root of 17399 is about 25.9124272637.

It can be divided in two parts, 1739 and 9, that multiplied together give a palindrome (15651).

The spelling of 17399 in words is "seventeen thousand, three hundred ninety-nine".